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变频串联谐振试验的应用及特点

发布时间：2023-05-18 15:57

应用3 GIS 和SF6 开关交流耐压试验

工频电压试验操作注意事项

发布时间：2023-05-18 15:56

(3)定大试，一般应先进行空升试验。即未接试品时升压，校对各种仪表，调整间隙。(6)在升压或耐压试验过程中，如发现下列异常之一，应立即降压，切断电源，停止试验，查明原因：①电压表指

直流和交流耐压测试的优缺点

发布时间：2023-05-18 15:55

交流耐压测试：被测设备电压的2.5倍及以上，从介质损耗的热损耗角度，可以有效发现局部无缺陷和绝缘老化弱点。由于交流电压中的主电压受到电压的影响，它可以有效地暴露设备的绝缘缺陷。但交

直流耐压测试仪在电缆测试中的作用

发布时间：2023-05-18 15:54

应分别对每相、其他两相导体、电缆两端的金属屏蔽层或金属护套和铠装层分别进行。对于这个测试，只需要注意电缆是一个容性器件，需要注意容性器件的绝缘电阻和吸收比。例如：测试前后全放电，一

变压器直流电阻测试仪的测量和放电

发布时间：2023-05-18 15:46

电缆故障快速查找的方法有哪些？

发布时间：2023-05-18 15:45

2.电缆故障搜索的分段搜索法所谓测声方法，就是找出故障电缆的放电声。该方法对高压电缆芯线与绝缘层之间的绝缘层闪络放电更为有效。当电容器充电到一定电压时，球隙放电电缆的故障芯。在故障

电缆故障低压脉冲法及直闪法工作原理

发布时间：2023-05-18 15:44

鸿蒙电气生产的LD-2004电缆故障测试仪又称埋地电力电缆故障测试仪、矿用电缆故障测试仪、通信电缆故障测试仪、路灯电缆故障测试仪、高低压电缆故障测试仪、直埋电缆故障测

带电电缆识别仪的查找方法

发布时间：2023-05-18 15:43

油浸式变压器绝缘诊断方法

发布时间：2023-05-18 15:43

传统特征值诊断方法中用于诊断油浸式变压器绝缘状态的参数主要有：油中溶解气体表示的化学参数、纤维素绝缘纸的糠醛含量和聚合度；绝缘电阻表示的电气参数，极化指数、介质损耗因

串联谐振和并联谐振的特性区别及应用

发布时间：2023-05-17 11:01

变频串联谐振装置广泛应用于电力、铁路电气化、钢铁、机械、冶金、石油、化工等行业。适用于高压、大容量电容测试对象的交流耐压测试。(1)由于感抗等于容抗，阻抗达到很小的值，具有纯电阻特

变频串联谐振耐压试验装置的应用及注意事项

发布时间：2023-05-17 11:00

可防止大短路电流烧毁故障点。在串联谐振状态下，当测试对象的绝缘弱点被击穿时，电路立即去谐波，回路电流迅速下降到正常测试电流的1/Q。但是，当使用并联谐振或试验变压器进行耐压试验时，

交流耐压测试仪的安全注意事项

发布时间：2023-05-17 10:58

防止火灾或人身伤害产品接地。除通过电源线导体接地外，产品外壳的接地棒也应接地。为防止触电，接地导体必须接地。在连接输入或输出端子之前，请确保产品已正确接地。使用合适的保险丝。仅使用

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